tried to find such a liquid substance that could deal effectively with the problem, and so he invented his fire fighting foam. 1903 Theoretical foundations of spaceflight By Konstantin Tsiolkovsky 1903 Cytoskeleton 1903 Motor ship The Russian tanker Vandal was the world's first diesel-powered ship. 1904 Radio jamming 1904 Foam extinguisher The first such extinguisher was produced in 1904 by Aleksandr Loran, who invented fire fighting foam two years before. 1905 Auscultatory blood pressure measurement By Nikolai Korotkov 1905 Korotkov sounds 1905 Insubmersibility By Alexey Krylov and Stepan Makarov 1906 Electric seismometer By Boris Borisovich Galitzine 1907 Aerosani / Snowmobile 1907 Pulsejet 1907 Bayan 1907 Church of the Savior on Blood The church contains over 7500 square metres of mosaics — according to its restorers, more than any other church in the world. 1910s 1910 Polybutadiene The first commercially viable synthetic rubber by Sergei Lebedev. 1910 Montage (filmmaking) or Kuleshov Effect (by Lev Kuleshov) 1910 Non-Aristotelian logic By Nikolai Vasilyev 1911 Knapsack parachute By Gleb Kotelnikov 1911 Television By Boris Rosing and Vladimir Zworykin 1911 Stanislavski's system A progression of techniques used to train actors to draw believable emotions to their performances. The method that was originally created and used by Constantin Stanislavski from 1911 to 1916 was based on the concept of emotional memory for which an actor focuses internally to portray a character's emotions onstage. 1913 Zaum Zaum (Russian: зáумь) is a word used to describe the linguistic experiments in sound symbolism and language creation of Russian Futurist poets such as Velimir Khlebnikov and Aleksei Kruchenykh. 1913 Airliner Russky Vityaz by Igor Sikorsky 1913 Half-track Also known as Kégresse track, invented by Adolphe Kégresse. 1914 Aerobatics By Pyotr Nesterov, independently from Adolphe Pégoud 1914 Gyrocar By Pyotr Shilovsky 1914 Tachanka By Nestor Makhno (according to some sources) 1914 Strategic bomber Sikorsky Ilya Muromets by Igor Sikorsky 1914 Aerial ramming By Pyotr Nesterov 1915 Activated charcoal gas mask By Nikolay Zelinsky, independently from James Bert Garner 1915 Vezdekhod Vezdekhod was the first prototype caterpillar tank, or tankette, and the first continuous track amphibious ATV. It was invented by Aleksandr Porokhovschikov in 1915. The word Vezdekhod means "He who goes anywhere" or "all-terrain vehicle". 1915 Tsar Tank This eccentric design differed from modern tanks in that it did not use caterpillar tracks, rather it used a wheeled tricycle design. The two front spoked wheels were nearly 9 metres (27 feet)